Being a world-class logistics heavyweight, DHL delivers a service called Tracking DHL International that covers everything from when your parcel achieves its current location in real time. By uniting the latest logistics technology with a friendly user interface, this system makes it possible for users to follow the fate of their packages all the way from leaving the warehouse on which they were dispatched to fighting off second-rate deliverymen standing at your door. This tracking service has three main functions: detailed tracking about the location and status of shipments, reminders for estimated delivery time, and by email or SMS real-time alerts on long-haul shipments. A tracking algorithm which is cryptographically secure, inbuilt artificial intelligence. Far afieldfrom the reader's view there are others too that might be mentioned -- global positioning systems (GPS), for example, are used to track and provide accurate location information on this worldwide scale system. This service is used for a wide range of purposes, from personal shipments to business logistics, making it a must-have tool for anyone who ships goods internationally.